Cebae Zhoema (L2) and Namgyal Zhoema (R2), a pair of twin girls of the Tibetan ethnic group who are both pupils of Grade 5 at the No.1 Elementary School of Lhasa, pose a group photo with classmates, in Lhasa, southwest China's Tibet Autonomous Region, Nov. 20, 2009. (Xinhua Photo)
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